Hard
Hard adjective - Having or showing a lack of sympathy or tender feelings.
Impregnable and hard are semantically related. In some cases you can use "Impregnable" instead an adjective "Hard".
Impregnable
Impregnable adjective - Impossible to get through or into.
Usage example: the castle's supposedly impregnable walls
Hard and impregnable are semantically related. Sometimes you can use "Hard" instead an adjective "Impregnable".
Mutual synonyms
Both words in one sentence
-
Stone Wall: Violet; Near-impregnable defense, but she'd be hard pressed to do anything to the aggressors.
- Violet of The Incredibles: near-impregnable defense thanks to her Barrier Warrior abilities, but she's hard-pressed to actually do anything to her aggressors.
Source: Stone Wall -
Difficult but Awesome: Cap can throw his shield in front of him, or also diagonal up or diagonal down, it's hard sometimes to hit a target, but with enough practice, this becomes an almost impregnable defense system.
Cite this Source
Impregnable and Hard. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/hard/impregnable
Hard & Impregnable. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/hard/impregnable>.
Impregnable or Hard. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/hard/impregnable.
Google Ngram Viewer shows how "hard" and "impregnable" have occurred on timeline